Business Information

IDEM administers a general permit program that targets storm water runoff associated with industrial activities. Requirements of this rule apply to specific categorical industrial facilities, which are exposed to storm water and have a point source discharge of storm water from the industrial activities. Facility managers are required to submit a Notice of Intent and implement a storm water pollution prevention plan to address the discharge of pollutants associated with storm water runoff from their facility.

327 IAC 15-6 [PDF] (Rule 6) has been revised. The revised Rule 6 became effective on November 26, 2003. This general permit rule applies to specific categories of industrial activities that have these activities “exposed” to storm water run-off. By definition in the rule, “storm water discharge exposed to industrial activity means storm water discharge that has been exposed to the manufacturing and processing activities, or raw materials or intermediate products storage areas at an industrial facility.

For further information on 327 IAC 15-6 please visit:

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